Certified Paraoptometric (CPO) Practice Exam 2025

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What does alternating esotropia indicate about the patient's vision?

  1. The patient sees double

  2. The patient fixates with both eyes equally

  3. The patient fixates with only one eye while the other turns in

  4. The patient can only see with the left eye

The correct answer is: The patient fixates with only one eye while the other turns in

Alternating esotropia is a condition where one eye turns inward while the other eye may either be straight or, in some cases, can alternate in turning in as well. This indicates that the patient does not fixate with both eyes equally and often fixates with one eye at a time. The inward turning of one eye usually reflects a misalignment of the eyes and can lead to situations where the patient may suppress the input from one eye to avoid double vision. Choosing the correct answer denotes an understanding of how alternating esotropia can affect visual fixation. In alternating esotropia, a person often utilizes one eye to fixate while the other eye may turn in, which aligns with the correct answer. This condition can result in the patient alternating the eye they use for clear vision, hence why it is crucial to recognize the typical visual behavior associated with this condition.